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• Introduction to wellsite methods
  * [[Drilling problems]] * [[Measurement while drilling]]
  763 bytes (76 words) - 20:06, 16 January 2014
• Pressure prediction: analysis of mud weights
  ==Mud weight and pore pressure== ..._problems_with_overpressured_reservoirs|blows out]], the pressure from the mud is less than, but usually close to, pore pressure.
  4 KB (572 words) - 17:56, 17 February 2022
• Drilling problems
  | chapter = Drilling problems ...de any difficulties encountered while [[drilling a well]]. The most common drilling problems are the creation of doglegs and key seats, hole instability, lost
  5 KB (732 words) - 21:18, 19 January 2022
• True resistivity determination
  ..._t) of a formation is its resistivity when not contaminated by [[drilling fluid]]s. It may contain formation water only ([[water saturation]] [S<sub> ...gure number|1}}Resistivity profiles of formations with fresh and saltwater mud filtrate invasion.]]
  3 KB (427 words) - 16:16, 5 April 2022
• Suggested pages
  ** [[Mud drape]] ** [[Mud information - interpretation]]
  2 KB (215 words) - 20:43, 10 August 2015
• Pressure prediction: analysis of cuttings
  ...an normal. This case also applies to shale, so we don't have to wait for a mud kick from a permeable zone to anticipate significant overpressure. Cuttings ...re likely to take place in permeable zones where there is a finite flow of mud filtrate into the formation.
  5 KB (818 words) - 17:56, 17 February 2022
• Rate of penetration
  ...eolograph'', or drilling recorder, mechanically monitors depth and records drilling parameters in time. These parameters are recorded on a paper chart, graduat ...ed. This results in an apparent increase in ROP. It is not unknown for the drilling hands to “gig” or pull on the recording cable, causing a similar appare
  7 KB (1,049 words) - 19:02, 20 January 2022
• Mudlogging: gas extraction and monitoring
  ...gases or a potential blowout condition. Accurate gas data recorded during drilling is of great value in proper reservoir evaluation and may even pinpoint pote ...1.png|{{figure number|1}}Mud system.<ref name=pt03r51>Whittaker, A., 1991, Mud logging handbook: Englewood Cliffs, NJ, Prentice-Hall.</ref>
  9 KB (1,327 words) - 15:28, 24 January 2022
• Pressure prediction: analysis of well-log and seismic data
  ...e of their low permeabilities, shales do not equilibrate pressure with the mud column in the well bore. Selecting only the purest shales minimizes the eff ==Log of drilling rate==
  5 KB (733 words) - 17:57, 17 February 2022
• Drilling fluid
  | chapter = Drilling fluid An essential element of [[drilling a well]] is the drilling fluid or mud. Drilling fluids serve a number of functions:
  13 KB (1,866 words) - 21:17, 19 January 2022
• Mudlogging: the mudlog
  ...es an accurate and up-to-date record of nearly all activity related to the drilling of the well. ...gure 2]] is an example of the layout and information content of a standard mud log. The general usage of the tracks (columns) on a mudlog are outlined her
  5 KB (752 words) - 15:39, 24 January 2022
• Measurement while drilling
  | chapter = Measurement while drilling ...ole evaluation of formation gamma ray, resistivity, and [[porosity]] while drilling is in progress. Mechanical parameters such as the following are also measur
  8 KB (1,083 words) - 21:18, 19 January 2022
• Formation fluid pressure from repeat formation testers
  | Drilling delay to run test || About one logging run (wireline conveyed) || About equ * Screen plugging with material in drilling mud
  6 KB (849 words) - 17:55, 17 February 2022
• Well planning
  ===Drilling program=== * [[Drilling problems]]
  6 KB (779 words) - 15:09, 24 January 2022
• Mudlogging: equipment, services, and personnel
  ...lling process. Mudlogging incorporates gas analysis and cuttings data with drilling information to build a continuous formation evaluation record as the well i * ''Blender''—A blender agitates and grinds a discrete sample of mud and cuttings and extracts the released gas for measurement.
  8 KB (1,031 words) - 15:27, 24 January 2022
• Mudlogging: drill cuttings analysis
  ...illed over a 10-ft interval. The interval length can vary depending on the drilling rate and the detail needed for reservoir and lithological descriptions. Whe When a drilling break or change in background gas occurs, supplemental samples should also
  10 KB (1,482 words) - 15:25, 24 January 2022
• Glossary
  ;DF:derrick floor or drilling fluid ;DM:drilling mud
  5 KB (840 words) - 13:51, 18 March 2019
• Land rigs
  [[File:PinedaleFieldLandRig.png|thumb|400px|Drilling rig in [[Pinedale field]] with the Wind River Mountains, Wyoming, USA in th ...nd mud pumps (34 in [[:file:Land rig example drawing.png|Figure 1]]) while drilling and to the drawworks (15) when [[trip]]ping.
  12 KB (2,020 words) - 16:19, 20 January 2022
• Offshore rigs
  ...er hull keeps the rig from sinking into the soft mud and provides a stable drilling platform. ...tom) to support the [[surface production equipment]], living quarters, and drilling rig ([[:file:offshore-rigs_fig1.png|Figure 1]]). Multiple [[Wellbore trajec
  7 KB (1,016 words) - 16:56, 20 January 2022
• Pressure detection
  ..., 382 p.</ref> Normal pressures range between 0.43 and 0.50 psi/ft. Normal drilling muds weigh about 9 ppg (pounds per gallon) and exert a bottom hole pressure ...ssure'' refers to pressures higher than normal that require heavy drilling mud to keep formation fluids from entering the borehole. Pressures lower than n
  16 KB (2,450 words) - 21:42, 20 January 2022

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